78964868 has 12 divisors (see below), whose sum is σ = 138319440. Its totient is φ = 39445032.

The previous prime is 78964867. The next prime is 78964891. The reversal of 78964868 is 86846987.

It is not an unprimeable number, because it can be changed into a prime (78964867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4298 + ... + 13281.

It is an arithmetic number, because the mean of its divisors is an integer number (11526620).

Almost surely, 2^78964868 is an apocalyptic number.

It is an amenable number.

78964868 is a deficient number, since it is larger than the sum of its proper divisors (59354572).

78964868 is a wasteful number, since it uses less digits than its factorization.

78964868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18706 (or 18704 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 56.

The square root of 78964868 is about 8886.2178681372. The cubic root of 78964868 is about 429.0204274463.

The spelling of 78964868 in words is "seventy-eight million, nine hundred sixty-four thousand, eight hundred sixty-eight".